SB20260527117 - Improper control of a resource through its lifetime in Linux kernel kvm svm
Published: May 27, 2026
Security Bulletin ID
SB20260527117
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-46071)
CWE-ID: CWE-664 - Improper control of a resource through its lifetime
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper state management in nested_svm_vmexit() and vmcb12 handling when copying last branch records. A local user can trigger a nested SVM VM exit to cause a denial of service.
The issue affects nested virtualization on AMD SVM.
Remediation
Install update from vendor's website.